Color enhanced scanning electron micrograph (SEM) of a white blood cell. There are three main types of white cells - lymphocytes, leukocytes and monocytes. Lymphocytes originate in the bone marrow & mature there or in the thymus - hence the names B-lymphocytes and T- lymphocytes. B-cells produce antibodies, chemicals that disable invading microorganisms. Some T-cells attack other cells infected with viruses directly.
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Creative#:
TOP22215563
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
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N/A
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No
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